Who has shot 9mm in a .40 caliber can?

[JP223]

Anyone has done this? If so how did it sound? Thanks for all your help.

[alucard]

I would say not so great: see this forum:
http://www.silencertests.com/silencer-f ... ight=trust

But if some one has actually done it with these calibers, chime in

[Mr_Psmith]

Anyone has done this? If so how did it sound? Thanks for all your help.

I can personally attest that on the Colt 635 (keep in mind this has a little more ejection port noise than a roller-locked gun), 9mm fired through a Knight's .40 cal MP5 can is quieter than through a Gem-Tech Mk9k.

These were two identical subguns, side by side, with the same ammunition; one had the Knight's .40 cal can, and one had the Mk9k. Very interesting, considering the aperature on the .40 cal can may be ca. 25% larger in area.